ISSN:
1434-6036
Keywords:
PACS. 76.60.-k Nuclear magnetic resonance and relaxation - 74.20.Mn Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anyon mechanism, marginal Fermi liquid, Luttinger liquid, etc.) - 75.40.Gb Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: The effects on the correlated Cu2+ S = 1/2 spin dynamics in the paramagnetic phase of La2-xSrxCuO4 (for ) due to the injection of holes are studied by means of 63Cu NQR spin-lattice relaxation time T1 measurements. The results are discussed in the framework of the connection between T1 and the in-plane magnetic correlation length . It is found that at high temperatures the system remains in the renormalized classical regime, with a spin stiffness constant reduced by small doping to an extent larger than the one due to Zn doping. For the effect of doping on appears to level off. The values for derived from T1 for K are much larger than the ones estimated from the temperature behavior of sublattice magnetization in the ordered phase ( ). It is argued that these features are consistent with the hypothesis of formation of stripes of microsegregated holes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050850
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